CVE-2021-32761

Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis *BIT* command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.3m 6.0.15, and 6.2.5 contain patches for this issue. An additional workaround to mitigate the problem without patching the redis-serverexecutable is to prevent users from modifying theproto-max-bulk-len` configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis *BIT* command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.3m 6.0.15, and 6.2.5 contain patches for this issue. An additional workaround to mitigate the problem without patching the redis-serverexecutable is to prevent users from modifying theproto-max-bulk-len` configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

Redis is an in-memory database that persists on disk. A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15, and 6.2.5. On 32-bit systems, Redis *BIT* command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution. The vulnerability involves changing the default proto-max-bulk-len configuration parameter to a very large value and constructing specially crafted commands bit commands. This problem only affects Redis on 32-bit platforms, or compiled as a 32-bit binary. Redis versions 5.0.3m 6.0.15, and 6.2.5 contain patches for this issue. An additional workaround to mitigate the problem without patching the redis-serverexecutable is to prevent users from modifying theproto-max-bulk-len` configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution (CVE-2021-29477).

An integer overflow bug in Redis 6.2 before 6.2.3 could be exploited to corrupt the heap and potentially result with remote code execution (CVE-2021-29478).

A vulnerability involving out-of-bounds read and integer overflow to buffer overflow exists starting with version 2.2 and prior to versions 5.0.13, 6.0.15 and 6.2.5. On 32-bit systems, Redis *BIT* command are vulnerable to integer overflow that can potentially be exploited to corrupt the heap, leak arbitrary heap contents or trigger remote code execution (CVE-2021-32761).

These are all security issues fixed in the redis-6.2.5-1.2 package on the GA media of openSUSE Tumbleweed.

It was discovered that Redis incorrectly handled certain specially crafted Lua scripts. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-32626)

It was discovered that Redis incorrectly handled some malformed requests when using Redis Lua Debugger. A remote attacker could possibly use this issue to cause a denial of service or other unspecified impact. This issue only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-32672)

It was discovered that Redis incorrectly handled certain Redis Standard Protocol (RESP) requests. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2021-32675)

It was discovered that Redis incorrectly handled some configuration parameters with specially crafted network payloads. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. Vulnerabilities CVE-2021-32627 and CVE-2021-41099 only affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-32627, CVE-2021-32628, CVE-2021-32687, CVE-2021-41099).

It was discovered that Redis incorrectly handled memory when processing certain input in 32-bit systems. A remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. One vulnerability (CVE-2021-32761) only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 ESM and another vulnerability (CVE-2021-21309) only affected Ubuntu 18.04 ESM. (CVE-2021-32761, CVE-2021-21309).